1540541545532 has 24 divisors (see below), whose sum is σ = 2984929893120. Its totient is φ = 689794720560.

The previous prime is 1540541545457. The next prime is 1540541545603. The reversal of 1540541545532 is 2355451450451.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261282932 + ... + 261288827.

It is an arithmetic number, because the mean of its divisors is an integer number (124372078880).

Almost surely, 2^{1540541545532} is an apocalyptic number.

It is an amenable number.

1540541545532 is a deficient number, since it is larger than the sum of its proper divisors (1444388347588).

1540541545532 is a wasteful number, since it uses less digits than its factorization.

1540541545532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522571841 (or 522571839 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 44.

Adding to 1540541545532 its reverse (2355451450451), we get a palindrome (3895992995983).

The spelling of 1540541545532 in words is "one trillion, five hundred forty billion, five hundred forty-one million, five hundred forty-five thousand, five hundred thirty-two".